Various shots of some unusual white chickens coming out of a coop and walking about - none of them have wings! They live at Shropshire Agricultural College.
Some men pick up the wingless chickens and examine them. Their feet are inspected and we see they don't have a middle toe. One bird is weighed in a cone-shaped contraption. A man stretches out the wing of a normal chicken and compares it with one of the wingless ones.
Note: the biological cause for this is not explained!